Kink eastman guard sprocketthe kink eastman guard sprocket is designed for those who hit the skatepark at full throttle each time they go out its guard efficiently protects its own teeth and your chain and as its constructed from 12 5mm thick 6061 t6 aluminium the eastman can take whatever you can through at it and come back for more its also widely compatible with the most popular cranks as it features wide crank arm channels and comes with adaptors for use with 19 22mm and 24mm spindles